/* --- VARIABLES DE THÈME --- */
:root {
    /* Thème Clair (Défaut) */
    --color-bg: #f4f6f8;
    --color-text-primary: #2c3e50;
    --color-text-secondary: #444;
    --color-text-tertiary: #555;
    --color-text-muted: #666;
    --color-text-link: #333;
    --color-text-input: #222;
    --color-job-title: #1a1a1a;
    --color-accent: #00d4ff;
    
    --glass-bg: rgba(255, 255, 255, 0.4);
    --glass-border: rgba(0, 0, 0, 0.05);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    --glass-hover-border: rgba(0, 0, 0, 0.1);
    --glass-shine: rgba(255, 255, 255, 0.4);
    
    --item-bg: rgba(0, 0, 0, 0.02);
    --item-border: rgba(0, 0, 0, 0.05);
    
    --tab-bg: rgba(0, 0, 0, 0.03);
    --tab-border: rgba(0, 0, 0, 0.05);
    
    --input-bg: rgba(0, 0, 0, 0.03);
    --input-border: rgba(0, 0, 0, 0.1);
    
    --orb-opacity: 0.4;
    --scroll-top-bg: rgba(0, 212, 255, 0.15);
    
    --toggle-slider-bg: #fff;
    --toggle-slider-shadow: 0 0 2px rgba(0,0,0,0.3);
}

[data-theme="dark"] {
    /* Thème Sombre */
    --color-bg: #0a0a0a;
    --color-text-primary: #e0e0e0;
    --color-text-secondary: #c0c0c0;
    --color-text-tertiary: #b0b0b0;
    --color-text-muted: #888;
    --color-text-link: #e0e0e0;
    --color-text-input: #e0e0e0;
    --color-job-title: #ffffff;
    --color-accent: #00d4ff; 

    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.3);
    --glass-hover-border: rgba(255, 255, 255, 0.2);
    --glass-shine: rgba(255, 255, 255, 0.1);

    --item-bg: rgba(255, 255, 255, 0.03);
    --item-border: rgba(255, 255, 255, 0.1);

    --tab-bg: rgba(255, 255, 255, 0.05);
    --tab-border: rgba(255, 255, 255, 0.1);

    --input-bg: rgba(255, 255, 255, 0.05);
    --input-border: rgba(255, 255, 255, 0.1);
    
    --orb-opacity: 0.6;
    --scroll-top-bg: rgba(0, 212, 255, 0.1);
    
    --toggle-slider-bg: #444;
    --toggle-slider-shadow: none;
}
/* FIN DU BLOC MODE SOMBRE */


/* --- Styles de base et Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--color-bg); 
    min-height: 100vh;
    padding: 40px 20px;
    line-height: 1.6;
    color: var(--color-text-primary); 
    overflow-x: hidden;
    transition: background 0.3s, color 0.3s;
}

/* --- Style de l'interrupteur de thème --- */
.theme-switcher {
    position: fixed;
    top: 40px;
    left: 40px;
    z-index: 1001;
}
.theme-switcher input[type="checkbox"] {
    display: none;
}
.theme-switcher label {
    cursor: pointer;
    display: block;
    width: 60px;
    height: 30px;
    background: var(--tab-bg);
    border: 1px solid var(--tab-border);
    border-radius: 50px;
    position: relative;
    transition: background 0.3s;
}
.theme-switcher label::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--toggle-slider-bg);
    box-shadow: var(--toggle-slider-shadow);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s;
}
.theme-switcher input:checked + label::after {
    transform: translateX(30px);
}
.theme-switcher .sun-icon, .theme-switcher .moon-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    line-height: 1;
}
.theme-switcher .sun-icon { left: 7px; }
.theme-switcher .moon-icon { right: 7px; }


/* --- Animation de fond (Orbes) --- */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: var(--orb-opacity); 
    animation: float 20s infinite ease-in-out;
    transition: opacity 0.3s;
}

.orb1, .orb2, .orb3 {
    width: 500px;
    height: 500px;
    background: linear-gradient(45deg, #00d4ff, #0099ff);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}
.orb2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(45deg, #a855f7, #ec4899);
    bottom: -150px;
    right: -150px;
    animation-delay: -7s;
}
.orb3 {
    width: 350px;
    height: 350px;
    background: linear-gradient(45deg, #06b6d4, #8b5cf6);
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(100px, -100px) rotate(120deg); }
    66% { transform: translate(-50px, 100px) rotate(240deg); }
}

/* --- Conteneur principal et Cartes (Glassmorphism) --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.glass-card {
    background: var(--glass-bg); 
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 30px;
    border: 1px solid var(--glass-border); 
    padding: 50px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px var(--glass-shadow); 
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--glass-shine), transparent); 
    transition: left 0.5s;
}

.glass-card:hover::before {
    left: 100%;
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--glass-hover-border); 
    box-shadow: 0 12px 48px rgba(0, 200, 255, 0.2); 
}

/* --- Barre de Navigation --- */
nav.main-nav {
    padding: 20px;
    margin-bottom: 0; 
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}
#profil .glass-card {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}
nav.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px; 
    list-style: none;
    margin: 0;
    padding: 0;
}
nav.main-nav a {
    text-decoration: none;
    color: var(--color-text-link);
    font-weight: 500;
    font-size: 1.1em;
    padding: 10px 15px;
    border-radius: 10px;
    transition: all 0.3s;
}
nav.main-nav a:hover,
nav.main-nav a:focus {
    color: var(--color-accent);
    background: rgba(0, 212, 255, 0.1);
}

/* --- En-tête et Titres --- */
header {
    text-align: center;
    padding: 60px 20px;
}

h1 {
    font-size: 4em;
    font-weight: 700;
    background: linear-gradient(135deg, #00d4ff, #a855f7, #ec4899);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 8s ease infinite;
    margin-bottom: 15px;
    letter-spacing: -2px;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.subtitle {
    font-size: 1.5em;
    color: var(--color-text-tertiary); 
    margin-bottom: 10px;
    font-weight: 300;
}

.subtitle.location {
    font-size: 1.1em;
    color: var(--color-text-tertiary);
    font-weight: 300;
    margin-bottom: 15px;
}
.subtitle.company-school {
    font-size: 1.1em;
    color: var(--color-text-secondary);
}

/* --- Infos de contact (En-tête) --- */
.contact-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.contact-item {
    background: var(--item-bg);
    backdrop-filter: blur(10px);
    padding: 12px 24px;
    border-radius: 50px;
    border: 1px solid var(--item-border);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-item:hover {
    background: rgba(0, 212, 255, 0.1); 
    border-color: #00d4ff;
    transform: translateY(-3px);
}

.contact-item a {
    color: var(--color-text-link);
    text-decoration: none;
    position: relative;
    z-index: 1; 
    transition: color 0.3s;
}

.contact-item:hover a {
    color: var(--color-accent);
}

/* --- Titres de section --- */
/*
   ↓↓↓ C'EST ICI LA MODIFICATION ↓↓↓
*/
h2, h3, h4, h5, h6 {
    font-size: 2.5em;
    font-weight: 600;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #00d4ff, #a855f7);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
}

h2::after, h3::after, h4::after, h5::after, h6::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #00d4ff, #a855f7);
    border-radius: 2px;
}
/*
   ↑↑↑ FIN DE LA MODIFICATION ↑↑↑
*/


/* --- Section Profil --- */
.profile-text {
    font-size: 1.2em;
    color: var(--color-text-secondary); 
    line-height: 1.8;
}


/* --- Section Compétences --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.skill-item {
    background: var(--item-bg);
    backdrop-filter: blur(10px);
    padding: 20px 25px;
    border-radius: 20px;
    border: 1px solid var(--item-border);
    /* Animation fluide entrée ET sortie */
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    color: var(--color-text-secondary); 
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #00d4ff, #a855f7);
    /* Animation fluide entrée ET sortie */
    transition: width 0.3s;
}


.skill-item:hover {
    background: rgba(0, 212, 255, 0.05); 
    border-color: rgba(0, 212, 255, 0.3);
    color: var(--color-text-primary);
    transform: translateX(10px); 
}

.skill-item:hover::before {
    width: 100%;
    opacity: 0.1;
}


/* --- Onglets (Tabs) Expériences --- */
.nav-tabs {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    background: var(--tab-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--tab-border);
    padding: 14px 28px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1em;
    transition: all 0.3s;
    color: var(--color-text-tertiary);
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

.tab-btn:hover::before {
    width: 300px;
    height: 300px;
}

.tab-btn:hover {
    border-color: rgba(0, 212, 255, 0.5);
    color: var(--color-accent);
}

.tab-btn.active {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(168, 85, 247, 0.2));
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.tab-btn span {
    position: relative;
    z-index: 1;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeInScale 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* --- Cartes d'Expérience et Formation --- */
.experience-item, .formation-item {
    background: var(--item-bg);
    backdrop-filter: blur(10px);
    padding: 30px;
    margin-bottom: 25px;
    border-radius: 25px;
    border: 1px solid var(--item-border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.experience-item:last-child, .formation-item:last-child {
    margin-bottom: 0;
}

.experience-item::after, .formation-item::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent);
    border-radius: 50%;
    transform: translate(50%, -50%);
    transition: transform 0.5s;
}

.experience-item:hover::after, .formation-item:hover::after {
    transform: translate(30%, -30%) scale(1.5);
}

.experience-item:hover, .formation-item:hover {
    background: rgba(0, 212, 255, 0.05); 
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
}

.job-title {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--color-job-title);
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.company {
    font-size: 1.2em;
    color: var(--color-accent); 
    font-weight: 500;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.period {
    color: var(--color-text-muted);
    font-style: italic;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

/* --- Styles du formulaire de contact --- */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 10px;
    font-size: 1.1em;
    color: var(--color-text-tertiary);
}

.contact-form input,
.contact-form textarea {
    background: var(--input-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--input-border);
    padding: 15px 20px;
    border-radius: 15px;
    color: var(--color-text-input);
    font-size: 1em;
    font-family: inherit;
    transition: all 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(0, 212, 255, 0.1); 
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(168, 85, 247, 0.2));
    border: 1px solid var(--color-accent);
    padding: 16px 30px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: 500;
    transition: all 0.3s;
    color: var(--color-accent);
    position: relative;
    overflow: hidden;
}

.submit-btn span {
    position: relative;
    z-index: 1;
}

.submit-btn:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.3), rgba(168, 85, 247, 0.3));
    color: #0056b3; 
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.3);
    transform: translateY(-3px);
}

[data-theme="dark"] .submit-btn:hover {
    color: #fff;
}


/* --- Bouton Scroll-to-Top --- */
.scroll-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 60px;
    height: 60px;
    background: var(--scroll-top-bg); 
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden; 
    transition: all 0.3s;
    z-index: 100;
    color: var(--color-accent);
    font-size: 24px;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible; 
}

.scroll-top:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* --- Animations d'entrée --- */
section {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}
nav.main-nav { animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) backwards; animation-delay: 0.1s; }
section:nth-of-type(1) { animation-delay: 0.2s; }
section:nth-of-type(2) { animation-delay: 0.3s; }
section:nth-of-type(3) { animation-delay: 0.4s; }
section:nth-of-type(4) { animation-delay: 0.5s; }
section:nth-of-type(5) { animation-delay: 0.6s; } 

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Règles de Responsivité --- */

@media (max-width: 992px) {
    body { padding: 30px 15px; }
    .glass-card { padding: 40px 30px; }
    h1 { font-size: 3em; }
    h2, h3, h4, h5, h6 { font-size: 2.2em; } /* Ajouté */
}

@media (max-width: 768px) {
    h1 { font-size: 2.5em; }
    header { padding: 40px 10px; }
    .glass-card { padding: 30px 20px; border-radius: 25px; }
    .skills-grid { grid-template-columns: 1fr; }
    h2, h3, h4, h5, h6 { font-size: 2em; } /* Ajouté */
    .nav-tabs { flex-direction: column; gap: 10px; }
    .tab-btn { width: 100%; }
    .contact-info { gap: 15px; }
    .scroll-top { width: 50px; height: 50px; font-size: 20px; right: 20px; bottom: 20px; }
    .theme-switcher { top: 30px; left: 20px; }
    
    nav.main-nav ul { gap: 10px; }
    nav.main-nav a { font-size: 1em; padding: 8px 12px; }
    nav.main-nav, #profil .glass-card { border-radius: 25px; }
    #profil .glass-card { margin-top: 30px; }
}

@media (max-width: 480px) {
    body { padding: 20px 10px; }
    .container { margin-top: 50px; } 
    h1 { font-size: 2.2em; }
    h2, h3, h4, h5, h6 { font-size: 1.8em; } /* Ajouté */
    .subtitle { font-size: 1.2em; }
    .glass-card { padding: 25px 15px; }
    .contact-item { width: 100%; justify-content: center; padding: 10px 20px; }
    .contact-info { gap: 10px; }
    .tab-btn { padding: 12px 20px; }
    .experience-item, .formation-item { padding: 25px; }
    .theme-switcher { top: 20px; left: 20px; }
    
    nav.main-nav ul {
        flex-direction: column; 
        gap: 5px;
        align-items: stretch;
    }
    nav.main-nav a {
        display: block; 
        text-align: center;
    }
}